Baek, 28, has a 4.96 ERA in 168.2 career innings for the Mariners. His best asset has been respectable control. The Ms signed Baek out of Korea for $1.3MM in ’98. Baseball America said back in ’05 that Baek succeeds by locating a full five-pitch repertoire. He had Tommy John surgery back in ’01.

Wells, 26, was shifted to relief at Triple A last year and picked up nine saves. His numbers have been ugly – tons of hits, poor control, mediocre strikeout rate. Baseball America notes his average slider and decent two-seam fastball.